mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
mtip32xx: updates based on feedback
* queue ncq commands when a non-ncq is in progress or error handling is active * merge variables 'internal_cmd_in_progress' and 'eh_active' into new variable 'flags' * get rid of read/write semaphore 'internal_sem' * new service thread to issue queued commands * use macros from ata.h for command codes * return ENOTTY for BLKFLSBUF ioctl * style changes Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
a71f483d79
commit
60ec0eecfa
2 changed files with 230 additions and 154 deletions
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@ -34,6 +34,7 @@
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#include <linux/bio.h>
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#include <linux/dma-mapping.h>
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#include <linux/idr.h>
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#include <linux/kthread.h>
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#include <../drivers/ata/ahci.h>
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#include "mtip32xx.h"
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@ -99,15 +100,6 @@ struct mtip_compat_ide_task_request_s {
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};
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#endif
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static int mtip_exec_internal_command(struct mtip_port *port,
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void *fis,
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int fisLen,
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dma_addr_t buffer,
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int bufLen,
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u32 opts,
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gfp_t atomic,
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unsigned long timeout);
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/*
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* This function check_for_surprise_removal is called
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* while card is removed from the system and it will
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@ -414,9 +406,9 @@ static void mtip_init_port(struct mtip_port *port)
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port->mmio + PORT_FIS_ADDR_HI);
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}
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writel(port->command_list_dma & 0xffffffff,
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writel(port->command_list_dma & 0xFFFFFFFF,
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port->mmio + PORT_LST_ADDR);
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writel(port->rxfis_dma & 0xffffffff, port->mmio + PORT_FIS_ADDR);
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writel(port->rxfis_dma & 0xFFFFFFFF, port->mmio + PORT_FIS_ADDR);
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/* Clear SError */
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writel(readl(port->mmio + PORT_SCR_ERR), port->mmio + PORT_SCR_ERR);
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@ -541,7 +533,7 @@ static void mtip_timeout_function(unsigned long int data)
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if (atomic_read(&port->commands[tag].active) &&
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(time_after(jiffies, port->commands[tag].comp_time))) {
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group = tag >> 5;
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bit = tag & 0x1f;
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bit = tag & 0x1F;
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command = &port->commands[tag];
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fis = (struct host_to_dev_fis *) command->command;
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@ -551,7 +543,7 @@ static void mtip_timeout_function(unsigned long int data)
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cmdto_cnt++;
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if (cmdto_cnt == 1)
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atomic_inc(&port->dd->eh_active);
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set_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
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/*
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* Clear the completed bit. This should prevent
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@ -589,7 +581,8 @@ static void mtip_timeout_function(unsigned long int data)
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"%d commands timed out: restarting port",
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cmdto_cnt);
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mtip_restart_port(port);
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atomic_dec(&port->dd->eh_active);
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clear_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
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wake_up_interruptible(&port->svc_wait);
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}
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/* Restart the timer */
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@ -728,7 +721,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
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del_timer(&port->cmd_timer);
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/* Set eh_active */
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atomic_inc(&dd->eh_active);
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set_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
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/* Loop through all the groups */
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for (group = 0; group < dd->slot_groups; group++) {
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@ -835,8 +828,9 @@ static void mtip_handle_tfe(struct driver_data *dd)
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}
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print_tags(dd, "TFE tags reissued:", tagaccum);
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/* Decrement eh_active */
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atomic_dec(&dd->eh_active);
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/* clear eh_active */
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clear_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
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wake_up_interruptible(&port->svc_wait);
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mod_timer(&port->cmd_timer,
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jiffies + msecs_to_jiffies(MTIP_TIMEOUT_CHECK_PERIOD));
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@ -871,7 +865,6 @@ static inline void mtip_process_sdbf(struct driver_data *dd)
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continue;
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command = &port->commands[tag];
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/* make internal callback */
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if (likely(command->comp_func)) {
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command->comp_func(
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@ -904,9 +897,8 @@ static inline void mtip_process_legacy(struct driver_data *dd, u32 port_stat)
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struct mtip_port *port = dd->port;
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struct mtip_cmd *cmd = &port->commands[MTIP_TAG_INTERNAL];
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if (port->internal_cmd_in_progress &&
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cmd != NULL &&
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!(readl(port->cmd_issue[MTIP_TAG_INTERNAL])
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if (test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) &&
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(cmd != NULL) && !(readl(port->cmd_issue[MTIP_TAG_INTERNAL])
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& (1 << MTIP_TAG_INTERNAL))) {
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if (cmd->comp_func) {
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cmd->comp_func(port,
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@ -1038,11 +1030,15 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
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to = jiffies + msecs_to_jiffies(timeout);
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do {
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if (test_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags)) {
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msleep(20);
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continue; /* svc thd is actively issuing commands */
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}
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/*
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* Ignore s_active bit 0 of array element 0.
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* This bit will always be set
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*/
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active = readl(port->s_active[0]) & 0xfffffffe;
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active = readl(port->s_active[0]) & 0xFFFFFFFE;
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for (n = 1; n < port->dd->slot_groups; n++)
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active |= readl(port->s_active[n]);
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@ -1060,9 +1056,9 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
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*
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* @port Pointer to the port data structure.
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* @fis Pointer to the FIS that describes the command.
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* @fisLen Length in WORDS of the FIS.
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* @fis_len Length in WORDS of the FIS.
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* @buffer DMA accessible for command data.
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* @bufLen Length, in bytes, of the data buffer.
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* @buf_len Length, in bytes, of the data buffer.
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* @opts Command header options, excluding the FIS length
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* and the number of PRD entries.
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* @timeout Time in ms to wait for the command to complete.
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@ -1075,9 +1071,9 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
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*/
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static int mtip_exec_internal_command(struct mtip_port *port,
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void *fis,
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int fisLen,
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int fis_len,
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dma_addr_t buffer,
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int bufLen,
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int buf_len,
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u32 opts,
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gfp_t atomic,
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unsigned long timeout)
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@ -1100,7 +1096,7 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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"Internal command already active\n");
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return -EBUSY;
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}
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port->internal_cmd_in_progress = 1;
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set_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);
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if (atomic == GFP_KERNEL) {
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/* wait for io to complete if non atomic */
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@ -1108,7 +1104,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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dev_warn(&port->dd->pdev->dev,
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"Failed to quiesce IO\n");
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release_slot(port, MTIP_TAG_INTERNAL);
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port->internal_cmd_in_progress = 0;
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clear_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);
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wake_up_interruptible(&port->svc_wait);
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return -EBUSY;
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}
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@ -1123,19 +1120,23 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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}
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/* Copy the command to the command table */
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memcpy(int_cmd->command, fis, fisLen*4);
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memcpy(int_cmd->command, fis, fis_len*4);
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/* Populate the SG list */
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int_cmd->command_header->opts =
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cpu_to_le32(opts | fisLen);
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if (bufLen) {
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__force_bit2int cpu_to_le32(opts | fis_len);
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if (buf_len) {
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command_sg = int_cmd->command + AHCI_CMD_TBL_HDR_SZ;
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command_sg->info = cpu_to_le32((bufLen-1) & 0x3fffff);
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command_sg->dba = cpu_to_le32(buffer & 0xffffffff);
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command_sg->dba_upper = cpu_to_le32((buffer >> 16) >> 16);
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command_sg->info =
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__force_bit2int cpu_to_le32((buf_len-1) & 0x3FFFFF);
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command_sg->dba =
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__force_bit2int cpu_to_le32(buffer & 0xFFFFFFFF);
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command_sg->dba_upper =
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__force_bit2int cpu_to_le32((buffer >> 16) >> 16);
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int_cmd->command_header->opts |= cpu_to_le32((1 << 16));
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int_cmd->command_header->opts |=
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__force_bit2int cpu_to_le32((1 << 16));
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}
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/* Populate the command header */
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@ -1151,8 +1152,9 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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&wait,
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msecs_to_jiffies(timeout)) == 0) {
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dev_err(&port->dd->pdev->dev,
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"Internal command did not complete [%d]\n",
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atomic);
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"Internal command did not complete [%d] "
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"within timeout of %lu ms\n",
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atomic, timeout);
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rv = -EAGAIN;
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}
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@ -1184,7 +1186,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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/* Clear the allocated and active bits for the internal command. */
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atomic_set(&int_cmd->active, 0);
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release_slot(port, MTIP_TAG_INTERNAL);
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port->internal_cmd_in_progress = 0;
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clear_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);
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wake_up_interruptible(&port->svc_wait);
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return rv;
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}
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@ -1233,8 +1236,6 @@ static int mtip_get_identify(struct mtip_port *port, void __user *user_buffer)
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int rv = 0;
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struct host_to_dev_fis fis;
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down_write(&port->dd->internal_sem);
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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fis.type = 0x27;
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@ -1292,7 +1293,6 @@ static int mtip_get_identify(struct mtip_port *port, void __user *user_buffer)
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}
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out:
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up_write(&port->dd->internal_sem);
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return rv;
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}
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@ -1310,8 +1310,6 @@ static int mtip_standby_immediate(struct mtip_port *port)
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int rv;
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struct host_to_dev_fis fis;
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down_write(&port->dd->internal_sem);
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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fis.type = 0x27;
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@ -1328,8 +1326,6 @@ static int mtip_standby_immediate(struct mtip_port *port)
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GFP_KERNEL,
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15000);
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up_write(&port->dd->internal_sem);
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return rv;
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}
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@ -1430,7 +1426,7 @@ static void mtip_dump_identify(struct mtip_port *port)
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((u64)sectors) * ATA_SECT_SIZE >> 20);
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pci_read_config_word(port->dd->pdev, PCI_REVISION_ID, &revid);
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switch (revid & 0xff) {
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switch (revid & 0xFF) {
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case 0x1:
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strlcpy(cbuf, "A0", 3);
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break;
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@ -1470,15 +1466,12 @@ static inline void fill_command_sg(struct driver_data *dd,
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if (dma_len > 0x400000)
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dev_err(&dd->pdev->dev,
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"DMA segment length truncated\n");
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command_sg->info = cpu_to_le32((dma_len-1) & 0x3fffff);
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#if (BITS_PER_LONG == 64)
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*((unsigned long *) &command_sg->dba) =
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cpu_to_le64(sg_dma_address(sg));
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#else
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command_sg->dba = cpu_to_le32(sg_dma_address(sg));
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command_sg->dba_upper =
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cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
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#endif
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command_sg->info = __force_bit2int
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cpu_to_le32((dma_len-1) & 0x3FFFFF);
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command_sg->dba = __force_bit2int
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cpu_to_le32(sg_dma_address(sg));
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command_sg->dba_upper = __force_bit2int
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cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
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command_sg++;
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sg++;
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}
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@ -1495,9 +1488,6 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
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struct host_to_dev_fis fis;
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struct host_to_dev_fis *reply = (port->rxfis + RX_FIS_D2H_REG);
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/* Lock the internal command semaphore. */
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down_write(&port->dd->internal_sem);
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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fis.type = 0x27;
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@ -1532,7 +1522,6 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
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0,
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GFP_KERNEL,
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MTIP_IOCTL_COMMAND_TIMEOUT_MS) < 0) {
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up_write(&port->dd->internal_sem);
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return -1;
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}
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@ -1549,7 +1538,6 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
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command[4],
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command[5]);
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up_write(&port->dd->internal_sem);
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return 0;
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}
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@ -1572,9 +1560,6 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
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struct host_to_dev_fis fis;
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struct host_to_dev_fis *reply = (port->rxfis + RX_FIS_D2H_REG);
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/* Lock the internal command semaphore. */
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down_write(&port->dd->internal_sem);
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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fis.type = 0x27;
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@ -1584,8 +1569,8 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
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fis.sect_count = command[3];
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if (fis.command == ATA_CMD_SMART) {
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fis.sector = command[1];
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fis.cyl_low = 0x4f;
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fis.cyl_hi = 0xc2;
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fis.cyl_low = 0x4F;
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fis.cyl_hi = 0xC2;
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}
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dbg_printk(MTIP_DRV_NAME
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@ -1609,7 +1594,6 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
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GFP_KERNEL,
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MTIP_IOCTL_COMMAND_TIMEOUT_MS)
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< 0) {
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up_write(&port->dd->internal_sem);
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return -1;
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}
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@ -1630,12 +1614,10 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
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if (copy_to_user(user_buffer,
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port->sector_buffer,
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ATA_SECT_SIZE * command[3])) {
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up_write(&port->dd->internal_sem);
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return -EFAULT;
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}
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}
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up_write(&port->dd->internal_sem);
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return 0;
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}
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@ -1658,26 +1640,28 @@ static unsigned int implicit_sector(unsigned char command,
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/* list of commands that have an implicit sector count of 1 */
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switch (command) {
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case 0xF1:
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case 0xF2:
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case 0xF3:
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case 0xF4:
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case 0xF5:
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case 0xF6:
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case 0xE4:
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case 0xE8:
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case ATA_CMD_SEC_SET_PASS:
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case ATA_CMD_SEC_UNLOCK:
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case ATA_CMD_SEC_ERASE_PREP:
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case ATA_CMD_SEC_ERASE_UNIT:
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case ATA_CMD_SEC_FREEZE_LOCK:
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case ATA_CMD_SEC_DISABLE_PASS:
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case ATA_CMD_PMP_READ:
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case ATA_CMD_PMP_WRITE:
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rv = 1;
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break;
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case 0xF9:
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if (features == 0x03)
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case ATA_CMD_SET_MAX:
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if (features == ATA_SET_MAX_UNLOCK)
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rv = 1;
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break;
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case 0xB0:
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if ((features == 0xD0) || (features == 0xD1))
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case ATA_CMD_SMART:
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if ((features == ATA_SMART_READ_VALUES) ||
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(features == ATA_SMART_READ_THRESHOLDS))
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rv = 1;
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break;
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case 0xB1:
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if ((features == 0xC2) || (features == 0xC3))
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case ATA_CMD_CONF_OVERLAY:
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if ((features == ATA_DCO_IDENTIFY) ||
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(features == ATA_DCO_SET))
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rv = 1;
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break;
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}
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@ -1777,9 +1761,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
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goto abort;
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}
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/* Lock the internal command semaphore. */
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down_write(&dd->internal_sem);
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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@ -1818,7 +1799,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
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|||
dev_warn(&dd->pdev->dev,
|
||||
"data movement but "
|
||||
"sect_count is 0\n");
|
||||
up_write(&dd->internal_sem);
|
||||
err = -EINVAL;
|
||||
goto abort;
|
||||
}
|
||||
|
@ -1838,19 +1818,25 @@ static int exec_drive_taskfile(struct driver_data *dd,
|
|||
fis.device);
|
||||
|
||||
switch (fis.command) {
|
||||
case 0x92: /* Change timeout for Download Microcode to 60 seconds.*/
|
||||
case ATA_CMD_DOWNLOAD_MICRO:
|
||||
/* Change timeout for Download Microcode to 60 seconds.*/
|
||||
timeout = 60000;
|
||||
break;
|
||||
case 0xf4: /* Change timeout for Security Erase Unit to 4 minutes.*/
|
||||
case ATA_CMD_SEC_ERASE_UNIT:
|
||||
/* Change timeout for Security Erase Unit to 4 minutes.*/
|
||||
timeout = 240000;
|
||||
break;
|
||||
case 0xe0: /* Change timeout for standby immediate to 10 seconds.*/
|
||||
case ATA_CMD_STANDBYNOW1:
|
||||
/* Change timeout for standby immediate to 10 seconds.*/
|
||||
timeout = 10000;
|
||||
break;
|
||||
case 0xf7: /* Change timeout for vendor unique command to 10 secs */
|
||||
case 0xF7:
|
||||
case 0xFA:
|
||||
/* Change timeout for vendor unique command to 10 secs */
|
||||
timeout = 10000;
|
||||
break;
|
||||
case 0xfa: /* Change timeout for vendor unique command to 10 secs */
|
||||
case ATA_CMD_SMART:
|
||||
/* Change timeout for vendor unique command to 10 secs */
|
||||
timeout = 10000;
|
||||
break;
|
||||
default:
|
||||
|
@ -1873,7 +1859,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
|
|||
0,
|
||||
GFP_KERNEL,
|
||||
timeout) < 0) {
|
||||
up_write(&dd->internal_sem);
|
||||
err = -EIO;
|
||||
goto abort;
|
||||
}
|
||||
|
@ -1916,7 +1901,7 @@ static int exec_drive_taskfile(struct driver_data *dd,
|
|||
}
|
||||
|
||||
/* Com rest after secure erase or lowlevel format */
|
||||
if (((fis.command == 0xF4) ||
|
||||
if (((fis.command == ATA_CMD_SEC_ERASE_UNIT) ||
|
||||
((fis.command == 0xFC) &&
|
||||
(fis.features == 0x27 || fis.features == 0x72 ||
|
||||
fis.features == 0x62 || fis.features == 0x26))) &&
|
||||
|
@ -1937,8 +1922,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
|
|||
req_task->io_ports[5],
|
||||
req_task->io_ports[6]);
|
||||
|
||||
up_write(&dd->internal_sem);
|
||||
|
||||
if (taskout) {
|
||||
if (copy_to_user(buf + outtotal, outbuf, taskout)) {
|
||||
err = -EFAULT;
|
||||
|
@ -2052,7 +2035,8 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
|
|||
ret = exec_drive_taskfile(dd, (void __user *) arg,
|
||||
&req_task, outtotal);
|
||||
|
||||
if (copy_to_user((void __user *) arg, &req_task, sizeof(req_task)))
|
||||
if (copy_to_user((void __user *) arg, &req_task,
|
||||
sizeof(req_task)))
|
||||
return -EFAULT;
|
||||
|
||||
return ret;
|
||||
|
@ -2117,13 +2101,13 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
|
|||
fis->opts = 1 << 7;
|
||||
fis->command =
|
||||
(dir == READ ? ATA_CMD_FPDMA_READ : ATA_CMD_FPDMA_WRITE);
|
||||
*((unsigned int *) &fis->lba_low) = (start & 0xffffff);
|
||||
*((unsigned int *) &fis->lba_low_ex) = ((start >> 24) & 0xffffff);
|
||||
*((unsigned int *) &fis->lba_low) = (start & 0xFFFFFF);
|
||||
*((unsigned int *) &fis->lba_low_ex) = ((start >> 24) & 0xFFFFFF);
|
||||
fis->device = 1 << 6;
|
||||
if (barrier)
|
||||
fis->device |= FUA_BIT;
|
||||
fis->features = nsect & 0xff;
|
||||
fis->features_ex = (nsect >> 8) & 0xff;
|
||||
fis->features = nsect & 0xFF;
|
||||
fis->features_ex = (nsect >> 8) & 0xFF;
|
||||
fis->sect_count = ((tag << 3) | (tag >> 5));
|
||||
fis->sect_cnt_ex = 0;
|
||||
fis->control = 0;
|
||||
|
@ -2132,8 +2116,9 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
|
|||
fill_command_sg(dd, command, nents);
|
||||
|
||||
/* Populate the command header */
|
||||
command->command_header->opts = cpu_to_le32(
|
||||
(nents << 16) | 5 | AHCI_CMD_PREFETCH);
|
||||
command->command_header->opts =
|
||||
__force_bit2int cpu_to_le32(
|
||||
(nents << 16) | 5 | AHCI_CMD_PREFETCH);
|
||||
command->command_header->byte_count = 0;
|
||||
|
||||
/*
|
||||
|
@ -2152,10 +2137,15 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
|
|||
command->async_callback = callback;
|
||||
|
||||
/*
|
||||
* Lock used to prevent this command from being issued
|
||||
* if an internal command is in progress.
|
||||
* To prevent this command from being issued
|
||||
* if an internal command is in progress or error handling is active.
|
||||
*/
|
||||
down_read(&port->dd->internal_sem);
|
||||
if (unlikely(test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) ||
|
||||
test_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags))) {
|
||||
set_bit(tag, port->cmds_to_issue);
|
||||
set_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Issue the command to the hardware */
|
||||
mtip_issue_ncq_command(port, tag);
|
||||
|
@ -2163,8 +2153,6 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
|
|||
/* Set the command's timeout value.*/
|
||||
port->commands[tag].comp_time = jiffies + msecs_to_jiffies(
|
||||
MTIP_NCQ_COMMAND_TIMEOUT_MS);
|
||||
|
||||
up_read(&port->dd->internal_sem);
|
||||
}
|
||||
|
||||
/*
|
||||
|
@ -2400,10 +2388,9 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
|
|||
timeout = jiffies + msecs_to_jiffies(MTIP_FTL_REBUILD_TIMEOUT_MS);
|
||||
|
||||
do {
|
||||
#ifdef CONFIG_HOTPLUG
|
||||
if (mtip_check_surprise_removal(dd->pdev))
|
||||
return -EFAULT;
|
||||
#endif
|
||||
|
||||
if (mtip_get_identify(dd->port, NULL) < 0)
|
||||
return -EFAULT;
|
||||
|
||||
|
@ -2438,6 +2425,74 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
|
|||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* service thread to issue queued commands
|
||||
*
|
||||
* @data Pointer to the driver data structure.
|
||||
*
|
||||
* return value
|
||||
* 0
|
||||
*/
|
||||
|
||||
static int mtip_service_thread(void *data)
|
||||
{
|
||||
struct driver_data *dd = (struct driver_data *)data;
|
||||
unsigned long slot, slot_start, slot_wrap;
|
||||
unsigned int num_cmd_slots = dd->slot_groups * 32;
|
||||
struct mtip_port *port = dd->port;
|
||||
|
||||
while (1) {
|
||||
/*
|
||||
* the condition is to check neither an internal command is
|
||||
* is in progress nor error handling is active
|
||||
*/
|
||||
wait_event_interruptible(port->svc_wait, (port->flags) &&
|
||||
!test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) &&
|
||||
!test_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags));
|
||||
|
||||
if (kthread_should_stop())
|
||||
break;
|
||||
|
||||
if (test_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags)) {
|
||||
set_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags);
|
||||
slot = 1;
|
||||
/* used to restrict the loop to one iteration */
|
||||
slot_start = num_cmd_slots;
|
||||
slot_wrap = 0;
|
||||
while (1) {
|
||||
slot = find_next_bit(port->cmds_to_issue,
|
||||
num_cmd_slots, slot);
|
||||
if (slot_wrap == 1) {
|
||||
if ((slot_start >= slot) ||
|
||||
(slot >= num_cmd_slots))
|
||||
break;
|
||||
}
|
||||
if (unlikely(slot_start == num_cmd_slots))
|
||||
slot_start = slot;
|
||||
|
||||
if (unlikely(slot == num_cmd_slots)) {
|
||||
slot = 1;
|
||||
slot_wrap = 1;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Issue the command to the hardware */
|
||||
mtip_issue_ncq_command(port, slot);
|
||||
|
||||
/* Set the command's timeout value.*/
|
||||
port->commands[slot].comp_time = jiffies +
|
||||
msecs_to_jiffies(MTIP_NCQ_COMMAND_TIMEOUT_MS);
|
||||
|
||||
clear_bit(slot, port->cmds_to_issue);
|
||||
}
|
||||
|
||||
clear_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags);
|
||||
clear_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Called once for each card.
|
||||
*
|
||||
|
@ -2463,13 +2518,6 @@ static int mtip_hw_init(struct driver_data *dd)
|
|||
|
||||
hba_setup(dd);
|
||||
|
||||
/*
|
||||
* Initialize the internal semaphore
|
||||
* Use a rw semaphore to enable prioritization of
|
||||
* mgmnt ioctl traffic during heavy IO load
|
||||
*/
|
||||
init_rwsem(&dd->internal_sem);
|
||||
|
||||
tasklet_init(&dd->tasklet, mtip_tasklet, (unsigned long)dd);
|
||||
|
||||
dd->port = kzalloc(sizeof(struct mtip_port), GFP_KERNEL);
|
||||
|
@ -2541,10 +2589,11 @@ static int mtip_hw_init(struct driver_data *dd)
|
|||
|
||||
if (readl(dd->mmio + HOST_CAP) & HOST_CAP_64)
|
||||
dd->port->commands[i].command_header->ctbau =
|
||||
cpu_to_le32(
|
||||
__force_bit2int cpu_to_le32(
|
||||
(dd->port->commands[i].command_dma >> 16) >> 16);
|
||||
dd->port->commands[i].command_header->ctba = cpu_to_le32(
|
||||
dd->port->commands[i].command_dma & 0xffffffff);
|
||||
dd->port->commands[i].command_header->ctba =
|
||||
__force_bit2int cpu_to_le32(
|
||||
dd->port->commands[i].command_dma & 0xFFFFFFFF);
|
||||
|
||||
/*
|
||||
* If this is not done, a bug is reported by the stock
|
||||
|
@ -2597,6 +2646,8 @@ static int mtip_hw_init(struct driver_data *dd)
|
|||
dd->mmio + HOST_CTL);
|
||||
|
||||
init_timer(&dd->port->cmd_timer);
|
||||
init_waitqueue_head(&dd->port->svc_wait);
|
||||
|
||||
dd->port->cmd_timer.data = (unsigned long int) dd->port;
|
||||
dd->port->cmd_timer.function = mtip_timeout_function;
|
||||
mod_timer(&dd->port->cmd_timer,
|
||||
|
@ -2667,12 +2718,12 @@ static int mtip_hw_exit(struct driver_data *dd)
|
|||
|
||||
del_timer_sync(&dd->port->cmd_timer);
|
||||
|
||||
/* Stop the bottom half tasklet. */
|
||||
tasklet_kill(&dd->tasklet);
|
||||
|
||||
/* Release the IRQ. */
|
||||
devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd);
|
||||
|
||||
/* Stop the bottom half tasklet. */
|
||||
tasklet_kill(&dd->tasklet);
|
||||
|
||||
/* Free the command/command header memory. */
|
||||
dmam_free_coherent(&dd->pdev->dev,
|
||||
HW_PORT_PRIV_DMA_SZ + (ATA_SECT_SIZE * 2),
|
||||
|
@ -2835,7 +2886,7 @@ static int mtip_block_ioctl(struct block_device *dev,
|
|||
|
||||
switch (cmd) {
|
||||
case BLKFLSBUF:
|
||||
return 0;
|
||||
return -ENOTTY;
|
||||
default:
|
||||
return mtip_hw_ioctl(dd, cmd, arg);
|
||||
}
|
||||
|
@ -2870,19 +2921,20 @@ static int mtip_block_compat_ioctl(struct block_device *dev,
|
|||
|
||||
switch (cmd) {
|
||||
case BLKFLSBUF:
|
||||
return 0;
|
||||
return -ENOTTY;
|
||||
case HDIO_DRIVE_TASKFILE: {
|
||||
struct mtip_compat_ide_task_request_s *compat_req_task;
|
||||
struct mtip_compat_ide_task_request_s __user *compat_req_task;
|
||||
ide_task_request_t req_task;
|
||||
int compat_tasksize, outtotal, ret;
|
||||
|
||||
compat_tasksize = sizeof(struct mtip_compat_ide_task_request_s);
|
||||
compat_tasksize =
|
||||
sizeof(struct mtip_compat_ide_task_request_s);
|
||||
|
||||
compat_req_task =
|
||||
(struct mtip_compat_ide_task_request_s __user *) arg;
|
||||
|
||||
if (copy_from_user(&req_task, (void __user *) arg,
|
||||
compat_tasksize - (2 * sizeof(compat_long_t))))
|
||||
compat_tasksize - (2 * sizeof(compat_long_t))))
|
||||
return -EFAULT;
|
||||
|
||||
if (get_user(req_task.out_size, &compat_req_task->out_size))
|
||||
|
@ -2950,12 +3002,8 @@ static int mtip_block_getgeo(struct block_device *dev,
|
|||
|
||||
geo->heads = 224;
|
||||
geo->sectors = 56;
|
||||
#if BITS_PER_LONG == 64
|
||||
geo->cylinders = capacity / (geo->heads * geo->sectors);
|
||||
#else
|
||||
do_div(capacity, (geo->heads * geo->sectors));
|
||||
sector_div(capacity, (geo->heads * geo->sectors));
|
||||
geo->cylinders = capacity;
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -2999,11 +3047,6 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
|
|||
return;
|
||||
}
|
||||
|
||||
if (unlikely(atomic_read(&dd->eh_active))) {
|
||||
bio_endio(bio, -EBUSY);
|
||||
return;
|
||||
}
|
||||
|
||||
sg = mtip_hw_get_scatterlist(dd, &tag);
|
||||
if (likely(sg != NULL)) {
|
||||
blk_queue_bounce(queue, &bio);
|
||||
|
@ -3032,7 +3075,7 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
|
|||
tag,
|
||||
bio_endio,
|
||||
bio,
|
||||
bio->bi_rw & REQ_FLUSH,
|
||||
bio->bi_rw & REQ_FUA,
|
||||
bio_data_dir(bio));
|
||||
} else
|
||||
bio_io_error(bio);
|
||||
|
@ -3055,6 +3098,7 @@ static int mtip_block_initialize(struct driver_data *dd)
|
|||
sector_t capacity;
|
||||
unsigned int index = 0;
|
||||
struct kobject *kobj;
|
||||
unsigned char thd_name[16];
|
||||
|
||||
/* Initialize the protocol layer. */
|
||||
rv = mtip_hw_init(dd);
|
||||
|
@ -3082,6 +3126,7 @@ static int mtip_block_initialize(struct driver_data *dd)
|
|||
blk_queue_max_segments(dd->queue, MTIP_MAX_SG);
|
||||
blk_queue_physical_block_size(dd->queue, 4096);
|
||||
blk_queue_io_min(dd->queue, 4096);
|
||||
blk_queue_flush(dd->queue, 0);
|
||||
|
||||
dd->disk = alloc_disk(MTIP_MAX_MINORS);
|
||||
if (dd->disk == NULL) {
|
||||
|
@ -3142,6 +3187,18 @@ static int mtip_block_initialize(struct driver_data *dd)
|
|||
kobject_put(kobj);
|
||||
}
|
||||
|
||||
sprintf(thd_name, "mtip_svc_thd_%02d", index);
|
||||
|
||||
dd->mtip_svc_handler = kthread_run(mtip_service_thread,
|
||||
dd, thd_name);
|
||||
|
||||
if (IS_ERR(dd->mtip_svc_handler)) {
|
||||
printk(KERN_ERR "mtip32xx: service thread failed to start\n");
|
||||
dd->mtip_svc_handler = NULL;
|
||||
rv = -EFAULT;
|
||||
goto read_capacity_error;
|
||||
}
|
||||
|
||||
return rv;
|
||||
|
||||
read_capacity_error:
|
||||
|
@ -3183,6 +3240,13 @@ static int mtip_block_initialize(struct driver_data *dd)
|
|||
static int mtip_block_remove(struct driver_data *dd)
|
||||
{
|
||||
struct kobject *kobj;
|
||||
|
||||
if (dd->mtip_svc_handler) {
|
||||
set_bit(MTIP_FLAG_SVC_THD_SHOULD_STOP_BIT, &dd->port->flags);
|
||||
wake_up_interruptible(&dd->port->svc_wait);
|
||||
kthread_stop(dd->mtip_svc_handler);
|
||||
}
|
||||
|
||||
/* Clean up the sysfs attributes managed by the protocol layer. */
|
||||
kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
|
||||
if (kobj) {
|
||||
|
@ -3275,7 +3339,6 @@ static int mtip_pci_probe(struct pci_dev *pdev,
|
|||
atomic_set(&dd->drv_cleanup_done, true);
|
||||
|
||||
atomic_set(&dd->resumeflag, false);
|
||||
atomic_set(&dd->eh_active, 0);
|
||||
|
||||
/* Attach the private data to this PCI device. */
|
||||
pci_set_drvdata(pdev, dd);
|
||||
|
@ -3317,7 +3380,6 @@ static int mtip_pci_probe(struct pci_dev *pdev,
|
|||
|
||||
/* Copy the info we may need later into the private data structure. */
|
||||
dd->major = mtip_major;
|
||||
dd->protocol = ent->driver_data;
|
||||
dd->instance = instance;
|
||||
dd->pdev = pdev;
|
||||
|
||||
|
|
|
@ -47,11 +47,11 @@
|
|||
|
||||
/* ftl rebuild */
|
||||
#define MTIP_FTL_REBUILD_OFFSET 142
|
||||
#define MTIP_FTL_REBUILD_MAGIC 0xed51
|
||||
#define MTIP_FTL_REBUILD_MAGIC 0xED51
|
||||
#define MTIP_FTL_REBUILD_TIMEOUT_MS 2400000
|
||||
|
||||
/* Macro to extract the tag bit number from a tag value. */
|
||||
#define MTIP_TAG_BIT(tag) (tag & 0x1f)
|
||||
#define MTIP_TAG_BIT(tag) (tag & 0x1F)
|
||||
|
||||
/*
|
||||
* Macro to extract the tag index from a tag value. The index
|
||||
|
@ -81,7 +81,7 @@
|
|||
|
||||
/* Driver name and version strings */
|
||||
#define MTIP_DRV_NAME "mtip32xx"
|
||||
#define MTIP_DRV_VERSION "1.2.6os2"
|
||||
#define MTIP_DRV_VERSION "1.2.6os3"
|
||||
|
||||
/* Maximum number of minor device numbers per device. */
|
||||
#define MTIP_MAX_MINORS 16
|
||||
|
@ -114,6 +114,15 @@
|
|||
#define dbg_printk(format, arg...)
|
||||
#endif
|
||||
|
||||
#define __force_bit2int (unsigned int __force)
|
||||
|
||||
/* below are bit numbers in 'flags' defined in mtip_port */
|
||||
#define MTIP_FLAG_IC_ACTIVE_BIT 0
|
||||
#define MTIP_FLAG_EH_ACTIVE_BIT 1
|
||||
#define MTIP_FLAG_SVC_THD_ACTIVE_BIT 2
|
||||
#define MTIP_FLAG_ISSUE_CMDS_BIT 4
|
||||
#define MTIP_FLAG_SVC_THD_SHOULD_STOP_BIT 8
|
||||
|
||||
/* Register Frame Information Structure (FIS), host to device. */
|
||||
struct host_to_dev_fis {
|
||||
/*
|
||||
|
@ -262,7 +271,7 @@ struct mtip_cmd {
|
|||
|
||||
unsigned long comp_time; /* command completion time, in jiffies */
|
||||
|
||||
atomic_t active; /* declares if this command sent to the drive. */
|
||||
atomic_t active; /* declares if this command sent to the drive. */
|
||||
};
|
||||
|
||||
/* Structure used to describe a port. */
|
||||
|
@ -278,7 +287,7 @@ struct mtip_port {
|
|||
void __iomem *mmio;
|
||||
/* Array of pointers to the memory mapped s_active registers. */
|
||||
void __iomem *s_active[MTIP_MAX_SLOT_GROUPS];
|
||||
/* Array of pointers to the memory mapped completed registers. */
|
||||
/* Array of pointers to the memory mapped completed registers. */
|
||||
void __iomem *completed[MTIP_MAX_SLOT_GROUPS];
|
||||
/* Array of pointers to the memory mapped Command Issue registers. */
|
||||
void __iomem *cmd_issue[MTIP_MAX_SLOT_GROUPS];
|
||||
|
@ -339,14 +348,24 @@ struct mtip_port {
|
|||
* are no longer needed.
|
||||
*/
|
||||
unsigned long allocated[SLOTBITS_IN_LONGS];
|
||||
/*
|
||||
* used to queue commands when an internal command is in progress
|
||||
* or error handling is active
|
||||
*/
|
||||
unsigned long cmds_to_issue[SLOTBITS_IN_LONGS];
|
||||
/*
|
||||
* Array of command slots. Structure includes pointers to the
|
||||
* command header and command table, and completion function and data
|
||||
* pointers.
|
||||
*/
|
||||
struct mtip_cmd commands[MTIP_MAX_COMMAND_SLOTS];
|
||||
/* Non-zero if an internal command is in progress. */
|
||||
int internal_cmd_in_progress;
|
||||
/* Used by mtip_service_thread to wait for an event */
|
||||
wait_queue_head_t svc_wait;
|
||||
/*
|
||||
* indicates the state of the port. Also, helps the service thread
|
||||
* to determine its action on wake up.
|
||||
*/
|
||||
unsigned long flags;
|
||||
/*
|
||||
* Timer used to complete commands that have been active for too long.
|
||||
*/
|
||||
|
@ -372,18 +391,11 @@ struct driver_data {
|
|||
|
||||
int instance; /* Instance number. First device probed is 0, ... */
|
||||
|
||||
int protocol; /* FIXME: Protocol ops array index. */
|
||||
|
||||
struct gendisk *disk; /* Pointer to our gendisk structure. */
|
||||
|
||||
struct pci_dev *pdev; /* Pointer to the PCI device structure. */
|
||||
|
||||
struct request_queue *queue; /* Our request queue. */
|
||||
/*
|
||||
* Semaphore used to lock out read/write commands during the
|
||||
* execution of an internal command.
|
||||
*/
|
||||
struct rw_semaphore internal_sem;
|
||||
|
||||
struct mtip_port *port; /* Pointer to the port data structure. */
|
||||
|
||||
|
@ -403,6 +415,8 @@ struct driver_data {
|
|||
atomic_t resumeflag; /* Atomic variable to track suspend/resume */
|
||||
|
||||
atomic_t eh_active; /* Flag for error handling tracking */
|
||||
|
||||
struct task_struct *mtip_svc_handler; /* task_struct of svc thd */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in a new issue